Before sending samples, it is important to consider the level of cleanliness that needs to be evaluated.
- Prepare the packaging that you will use for the samples.
Standards VDA 19.1 and ISO 16232 refer to layered packaging. Ideally, samples should be packaged with three levels of protection. When selecting the packaging, avoid using paper, cardboard, or polymer foams in direct contact with the samples to be tested. The outer layer of the packaging may be made of cardboard.
- Think about how you will identify the samples.
Prepare the labels you will use or the identification documents, ensuring that the identification you assign to the test items matches exactly the identification of the item quoted by the laboratory. If it is easier for you, place a copy of the BIDEA offer inside the box. Avoid packaging multiple test items together unless you identify them in such a way that the laboratory has no doubt about the identification of each group of samples. Unidentified samples will be rejected.
- Selection of test samples
The samples must be representative of the cleanliness level achieved by the process. This requires ensuring that the operator collecting the sample does not contaminate it. Use clean gloves and lint‑free clothing. Avoid touching the samples with dirty hands. Do not mark them with felt‑tip pens or adhesive labels. Place the test samples carefully in the packaging. Avoid dropping them from a height or allowing them to be struck.
